FM2822 FMSH 11–15V Ballast Control IC DIP16

FM2822 is a dimming ballast control IC. It contains half bridge driver; voltage controlled oscillation circuit (VCO); phase detection and protection circuit; dim circuit; and control logic unit. It works in close loop state, with wide dim range and high stability. Its special

Key Specifications

Features

• Dim range 1%~100%
• Phase detection and avoid Hard Switch
• Closed-loop lamp current contro
• Internal active rectifier
• Dim range without flicker
• Adjustable preheat time and ignite time
• Half-bridge convert circuit with capacitive protectio Over voltage protect
• End of live (EOL) protectio

Design Notes

• The trip threshold is specified over a tolerance band, not at a single point. Design the sense resistor against the worst-case ends of that band, or nuisance tripping will appear at temperature extremes.
• These circuits are usually supplied from a capacitive dropper or a resistive divider off the mains. Verify the supply current budget against the datasheet before adding load.
• Package choice drives creepage. For mains-referenced parts, use the widest package the layout allows and keep the specified clearance to the low-voltage side.
• Check the temperature coefficient of the threshold if the product must hold accuracy over an outdoor temperature range.

Common Questions

What is the trip threshold?

the threshold above. The threshold is specified over a tolerance band, so size the sense element against the band ends rather than the typical value.

What does this device do?

Dimmable electronic ballast controller. It integrates the control loop that would otherwise need a board of discrete parts.

Which packages are offered?

DIP16, SOP16. For mains-referenced circuits choose the package that meets the creepage requirement of the layout.

How is it powered?

Typically from a capacitive dropper or resistive divider off the mains rail. Check the supply current budget in the datasheet before adding any load to that rail.